The mystery of dreams has long captivated many scholars. From a psychological perspective, Freud believed that dreams are a fulfillment of wishes, particularly the expression of sexual desires. Adler proposed that dreams are purposeful, helping individuals cope with challenges in life. Jung emphasized that dreams reflect the collective unconscious and carry significant meaning. Physiologist Pavlov approached dreams from a physiological standpoint, suggesting that they are the result of excitatory activity in the cerebral cortex during sleep. Modern scientific research has further revealed the nature of dreams, such as those occurring during the rapid eye movement (REM) sleep phase and the neuronal activity involved. Although these theories are not perfect, they provide valuable insights for our understanding of dreams.